Chef&rsquo;sChoice 130 Professional Electric Knife Sharpening Station for Straight and Serrated Knives Diamond Abrasives and Precision Angle Guides Made in USA, 3-Stages, Platinum Built-in precision angle guides in all three stages eliminate guesswork and produce consistently sharp edges every time. Professional sharpening, steeling, or stropping for all types of 20-degree class knives. Sharpen both straight edge and serrated knives including kitchen, household, sports and pocket knives. Electric 3-stage sharpener with 100-percent diamonds in stage 1, super-hardened sharpening steel in stage 2 and flexible stropping disks in stage 3. Optimum edge customized for every cutting task. Stabilizing rubber feet hold the unit securely to the work surface. Single on/off button. 3-year limited warranty.